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TYC 1392-409-1


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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Investigation of the Praesepe cluster. I - Identification of halo members
Coravel radial velocities and UBVRI (Kron) photometry of 117 starsselected by their proper motion in the region surrounding Praesepe (NGC2632, C 0837 + 201) have permitted identification of 48 members of thecluster halo, up to a distance of 4 deg from the cluster center. The 43(F5-K0) new members represent 51 percent of the number of nucleusmembers known in this spectral interval. Ten spectroscopic binaries havebeen discovered among the F5-F0 members, resulting in a frequency of 23percent, which rises to 33 percent four probable binaries are taken intoaccount. Six orbits have been obtained, with periods ranging from 1.2 to143 d. Four additional binaries have been detected among the non-memberstars.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yengec
Sað Açýklýk:08h37m12.97s
Yükselim:+17°15'14.7"
Görünürdeki Parlaklýk:8.923
Uzaklýk:93.897 parsek
özdevim Sað Açýklýk:-39
özdevim Yükselim:-24.9
B-T magnitude:9.601
V-T magnitude:8.979

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
TYCHO-2 2000TYC 1392-409-1
USNO-A2.0USNO-A2 1050-05799392
HIPHIP 42277
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